1149 строки
32 KiB
C
1149 строки
32 KiB
C
#ifndef __KVM_HOST_H
|
|
#define __KVM_HOST_H
|
|
|
|
/*
|
|
* This work is licensed under the terms of the GNU GPL, version 2. See
|
|
* the COPYING file in the top-level directory.
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/hardirq.h>
|
|
#include <linux/list.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/signal.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/bug.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/mmu_notifier.h>
|
|
#include <linux/preempt.h>
|
|
#include <linux/msi.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/rcupdate.h>
|
|
#include <linux/ratelimit.h>
|
|
#include <linux/err.h>
|
|
#include <linux/irqflags.h>
|
|
#include <linux/context_tracking.h>
|
|
#include <asm/signal.h>
|
|
|
|
#include <linux/kvm.h>
|
|
#include <linux/kvm_para.h>
|
|
|
|
#include <linux/kvm_types.h>
|
|
|
|
#include <asm/kvm_host.h>
|
|
|
|
/*
|
|
* The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used
|
|
* in kvm, other bits are visible for userspace which are defined in
|
|
* include/linux/kvm_h.
|
|
*/
|
|
#define KVM_MEMSLOT_INVALID (1UL << 16)
|
|
#define KVM_MEMSLOT_INCOHERENT (1UL << 17)
|
|
|
|
/* Two fragments for cross MMIO pages. */
|
|
#define KVM_MAX_MMIO_FRAGMENTS 2
|
|
|
|
#ifndef KVM_ADDRESS_SPACE_NUM
|
|
#define KVM_ADDRESS_SPACE_NUM 1
|
|
#endif
|
|
|
|
/*
|
|
* For the normal pfn, the highest 12 bits should be zero,
|
|
* so we can mask bit 62 ~ bit 52 to indicate the error pfn,
|
|
* mask bit 63 to indicate the noslot pfn.
|
|
*/
|
|
#define KVM_PFN_ERR_MASK (0x7ffULL << 52)
|
|
#define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52)
|
|
#define KVM_PFN_NOSLOT (0x1ULL << 63)
|
|
|
|
#define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK)
|
|
#define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1)
|
|
#define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2)
|
|
|
|
/*
|
|
* error pfns indicate that the gfn is in slot but faild to
|
|
* translate it to pfn on host.
|
|
*/
|
|
static inline bool is_error_pfn(pfn_t pfn)
|
|
{
|
|
return !!(pfn & KVM_PFN_ERR_MASK);
|
|
}
|
|
|
|
/*
|
|
* error_noslot pfns indicate that the gfn can not be
|
|
* translated to pfn - it is not in slot or failed to
|
|
* translate it to pfn.
|
|
*/
|
|
static inline bool is_error_noslot_pfn(pfn_t pfn)
|
|
{
|
|
return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK);
|
|
}
|
|
|
|
/* noslot pfn indicates that the gfn is not in slot. */
|
|
static inline bool is_noslot_pfn(pfn_t pfn)
|
|
{
|
|
return pfn == KVM_PFN_NOSLOT;
|
|
}
|
|
|
|
/*
|
|
* architectures with KVM_HVA_ERR_BAD other than PAGE_OFFSET (e.g. s390)
|
|
* provide own defines and kvm_is_error_hva
|
|
*/
|
|
#ifndef KVM_HVA_ERR_BAD
|
|
|
|
#define KVM_HVA_ERR_BAD (PAGE_OFFSET)
|
|
#define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE)
|
|
|
|
static inline bool kvm_is_error_hva(unsigned long addr)
|
|
{
|
|
return addr >= PAGE_OFFSET;
|
|
}
|
|
|
|
#endif
|
|
|
|
#define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT))
|
|
|
|
static inline bool is_error_page(struct page *page)
|
|
{
|
|
return IS_ERR(page);
|
|
}
|
|
|
|
/*
|
|
* vcpu->requests bit members
|
|
*/
|
|
#define KVM_REQ_TLB_FLUSH 0
|
|
#define KVM_REQ_MIGRATE_TIMER 1
|
|
#define KVM_REQ_REPORT_TPR_ACCESS 2
|
|
#define KVM_REQ_MMU_RELOAD 3
|
|
#define KVM_REQ_TRIPLE_FAULT 4
|
|
#define KVM_REQ_PENDING_TIMER 5
|
|
#define KVM_REQ_UNHALT 6
|
|
#define KVM_REQ_MMU_SYNC 7
|
|
#define KVM_REQ_CLOCK_UPDATE 8
|
|
#define KVM_REQ_KICK 9
|
|
#define KVM_REQ_DEACTIVATE_FPU 10
|
|
#define KVM_REQ_EVENT 11
|
|
#define KVM_REQ_APF_HALT 12
|
|
#define KVM_REQ_STEAL_UPDATE 13
|
|
#define KVM_REQ_NMI 14
|
|
#define KVM_REQ_PMU 15
|
|
#define KVM_REQ_PMI 16
|
|
#define KVM_REQ_WATCHDOG 17
|
|
#define KVM_REQ_MASTERCLOCK_UPDATE 18
|
|
#define KVM_REQ_MCLOCK_INPROGRESS 19
|
|
#define KVM_REQ_EPR_EXIT 20
|
|
#define KVM_REQ_SCAN_IOAPIC 21
|
|
#define KVM_REQ_GLOBAL_CLOCK_UPDATE 22
|
|
#define KVM_REQ_ENABLE_IBS 23
|
|
#define KVM_REQ_DISABLE_IBS 24
|
|
#define KVM_REQ_APIC_PAGE_RELOAD 25
|
|
#define KVM_REQ_SMI 26
|
|
#define KVM_REQ_HV_CRASH 27
|
|
|
|
#define KVM_USERSPACE_IRQ_SOURCE_ID 0
|
|
#define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1
|
|
|
|
extern struct kmem_cache *kvm_vcpu_cache;
|
|
|
|
extern spinlock_t kvm_lock;
|
|
extern struct list_head vm_list;
|
|
|
|
struct kvm_io_range {
|
|
gpa_t addr;
|
|
int len;
|
|
struct kvm_io_device *dev;
|
|
};
|
|
|
|
#define NR_IOBUS_DEVS 1000
|
|
|
|
struct kvm_io_bus {
|
|
int dev_count;
|
|
int ioeventfd_count;
|
|
struct kvm_io_range range[];
|
|
};
|
|
|
|
enum kvm_bus {
|
|
KVM_MMIO_BUS,
|
|
KVM_PIO_BUS,
|
|
KVM_VIRTIO_CCW_NOTIFY_BUS,
|
|
KVM_FAST_MMIO_BUS,
|
|
KVM_NR_BUSES
|
|
};
|
|
|
|
int kvm_io_bus_write(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr,
|
|
int len, const void *val);
|
|
int kvm_io_bus_write_cookie(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx,
|
|
gpa_t addr, int len, const void *val, long cookie);
|
|
int kvm_io_bus_read(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr,
|
|
int len, void *val);
|
|
int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
|
|
int len, struct kvm_io_device *dev);
|
|
int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
|
|
struct kvm_io_device *dev);
|
|
|
|
#ifdef CONFIG_KVM_ASYNC_PF
|
|
struct kvm_async_pf {
|
|
struct work_struct work;
|
|
struct list_head link;
|
|
struct list_head queue;
|
|
struct kvm_vcpu *vcpu;
|
|
struct mm_struct *mm;
|
|
gva_t gva;
|
|
unsigned long addr;
|
|
struct kvm_arch_async_pf arch;
|
|
bool wakeup_all;
|
|
};
|
|
|
|
void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu);
|
|
void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu);
|
|
int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, unsigned long hva,
|
|
struct kvm_arch_async_pf *arch);
|
|
int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu);
|
|
#endif
|
|
|
|
enum {
|
|
OUTSIDE_GUEST_MODE,
|
|
IN_GUEST_MODE,
|
|
EXITING_GUEST_MODE,
|
|
READING_SHADOW_PAGE_TABLES,
|
|
};
|
|
|
|
/*
|
|
* Sometimes a large or cross-page mmio needs to be broken up into separate
|
|
* exits for userspace servicing.
|
|
*/
|
|
struct kvm_mmio_fragment {
|
|
gpa_t gpa;
|
|
void *data;
|
|
unsigned len;
|
|
};
|
|
|
|
struct kvm_vcpu {
|
|
struct kvm *kvm;
|
|
#ifdef CONFIG_PREEMPT_NOTIFIERS
|
|
struct preempt_notifier preempt_notifier;
|
|
#endif
|
|
int cpu;
|
|
int vcpu_id;
|
|
int srcu_idx;
|
|
int mode;
|
|
unsigned long requests;
|
|
unsigned long guest_debug;
|
|
|
|
struct mutex mutex;
|
|
struct kvm_run *run;
|
|
|
|
int fpu_active;
|
|
int guest_fpu_loaded, guest_xcr0_loaded;
|
|
unsigned char fpu_counter;
|
|
wait_queue_head_t wq;
|
|
struct pid *pid;
|
|
int sigset_active;
|
|
sigset_t sigset;
|
|
struct kvm_vcpu_stat stat;
|
|
unsigned int halt_poll_ns;
|
|
|
|
#ifdef CONFIG_HAS_IOMEM
|
|
int mmio_needed;
|
|
int mmio_read_completed;
|
|
int mmio_is_write;
|
|
int mmio_cur_fragment;
|
|
int mmio_nr_fragments;
|
|
struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS];
|
|
#endif
|
|
|
|
#ifdef CONFIG_KVM_ASYNC_PF
|
|
struct {
|
|
u32 queued;
|
|
struct list_head queue;
|
|
struct list_head done;
|
|
spinlock_t lock;
|
|
} async_pf;
|
|
#endif
|
|
|
|
#ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT
|
|
/*
|
|
* Cpu relax intercept or pause loop exit optimization
|
|
* in_spin_loop: set when a vcpu does a pause loop exit
|
|
* or cpu relax intercepted.
|
|
* dy_eligible: indicates whether vcpu is eligible for directed yield.
|
|
*/
|
|
struct {
|
|
bool in_spin_loop;
|
|
bool dy_eligible;
|
|
} spin_loop;
|
|
#endif
|
|
bool preempted;
|
|
struct kvm_vcpu_arch arch;
|
|
};
|
|
|
|
static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu)
|
|
{
|
|
return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE);
|
|
}
|
|
|
|
/*
|
|
* Some of the bitops functions do not support too long bitmaps.
|
|
* This number must be determined not to exceed such limits.
|
|
*/
|
|
#define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1)
|
|
|
|
struct kvm_memory_slot {
|
|
gfn_t base_gfn;
|
|
unsigned long npages;
|
|
unsigned long *dirty_bitmap;
|
|
struct kvm_arch_memory_slot arch;
|
|
unsigned long userspace_addr;
|
|
u32 flags;
|
|
short id;
|
|
};
|
|
|
|
static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot)
|
|
{
|
|
return ALIGN(memslot->npages, BITS_PER_LONG) / 8;
|
|
}
|
|
|
|
struct kvm_s390_adapter_int {
|
|
u64 ind_addr;
|
|
u64 summary_addr;
|
|
u64 ind_offset;
|
|
u32 summary_offset;
|
|
u32 adapter_id;
|
|
};
|
|
|
|
struct kvm_kernel_irq_routing_entry {
|
|
u32 gsi;
|
|
u32 type;
|
|
int (*set)(struct kvm_kernel_irq_routing_entry *e,
|
|
struct kvm *kvm, int irq_source_id, int level,
|
|
bool line_status);
|
|
union {
|
|
struct {
|
|
unsigned irqchip;
|
|
unsigned pin;
|
|
} irqchip;
|
|
struct msi_msg msi;
|
|
struct kvm_s390_adapter_int adapter;
|
|
};
|
|
struct hlist_node link;
|
|
};
|
|
|
|
#ifndef KVM_PRIVATE_MEM_SLOTS
|
|
#define KVM_PRIVATE_MEM_SLOTS 0
|
|
#endif
|
|
|
|
#ifndef KVM_MEM_SLOTS_NUM
|
|
#define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS)
|
|
#endif
|
|
|
|
#ifndef __KVM_VCPU_MULTIPLE_ADDRESS_SPACE
|
|
static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu *vcpu)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Note:
|
|
* memslots are not sorted by id anymore, please use id_to_memslot()
|
|
* to get the memslot by its id.
|
|
*/
|
|
struct kvm_memslots {
|
|
u64 generation;
|
|
struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM];
|
|
/* The mapping table from slot id to the index in memslots[]. */
|
|
short id_to_index[KVM_MEM_SLOTS_NUM];
|
|
atomic_t lru_slot;
|
|
int used_slots;
|
|
};
|
|
|
|
struct kvm {
|
|
spinlock_t mmu_lock;
|
|
struct mutex slots_lock;
|
|
struct mm_struct *mm; /* userspace tied to this vm */
|
|
struct kvm_memslots *memslots[KVM_ADDRESS_SPACE_NUM];
|
|
struct srcu_struct srcu;
|
|
struct srcu_struct irq_srcu;
|
|
struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
|
|
atomic_t online_vcpus;
|
|
int last_boosted_vcpu;
|
|
struct list_head vm_list;
|
|
struct mutex lock;
|
|
struct kvm_io_bus *buses[KVM_NR_BUSES];
|
|
#ifdef CONFIG_HAVE_KVM_EVENTFD
|
|
struct {
|
|
spinlock_t lock;
|
|
struct list_head items;
|
|
struct list_head resampler_list;
|
|
struct mutex resampler_lock;
|
|
} irqfds;
|
|
struct list_head ioeventfds;
|
|
#endif
|
|
struct kvm_vm_stat stat;
|
|
struct kvm_arch arch;
|
|
atomic_t users_count;
|
|
#ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
|
|
struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
|
|
spinlock_t ring_lock;
|
|
struct list_head coalesced_zones;
|
|
#endif
|
|
|
|
struct mutex irq_lock;
|
|
#ifdef CONFIG_HAVE_KVM_IRQCHIP
|
|
/*
|
|
* Update side is protected by irq_lock.
|
|
*/
|
|
struct kvm_irq_routing_table __rcu *irq_routing;
|
|
#endif
|
|
#ifdef CONFIG_HAVE_KVM_IRQFD
|
|
struct hlist_head irq_ack_notifier_list;
|
|
#endif
|
|
|
|
#if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
|
|
struct mmu_notifier mmu_notifier;
|
|
unsigned long mmu_notifier_seq;
|
|
long mmu_notifier_count;
|
|
#endif
|
|
long tlbs_dirty;
|
|
struct list_head devices;
|
|
};
|
|
|
|
#define kvm_err(fmt, ...) \
|
|
pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
|
|
#define kvm_info(fmt, ...) \
|
|
pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
|
|
#define kvm_debug(fmt, ...) \
|
|
pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
|
|
#define kvm_pr_unimpl(fmt, ...) \
|
|
pr_err_ratelimited("kvm [%i]: " fmt, \
|
|
task_tgid_nr(current), ## __VA_ARGS__)
|
|
|
|
/* The guest did something we don't support. */
|
|
#define vcpu_unimpl(vcpu, fmt, ...) \
|
|
kvm_pr_unimpl("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)
|
|
|
|
#define vcpu_debug(vcpu, fmt, ...) \
|
|
kvm_debug("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)
|
|
|
|
static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i)
|
|
{
|
|
/* Pairs with smp_wmb() in kvm_vm_ioctl_create_vcpu, in case
|
|
* the caller has read kvm->online_vcpus before (as is the case
|
|
* for kvm_for_each_vcpu, for example).
|
|
*/
|
|
smp_rmb();
|
|
return kvm->vcpus[i];
|
|
}
|
|
|
|
#define kvm_for_each_vcpu(idx, vcpup, kvm) \
|
|
for (idx = 0; \
|
|
idx < atomic_read(&kvm->online_vcpus) && \
|
|
(vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \
|
|
idx++)
|
|
|
|
#define kvm_for_each_memslot(memslot, slots) \
|
|
for (memslot = &slots->memslots[0]; \
|
|
memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\
|
|
memslot++)
|
|
|
|
int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
|
|
void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
|
|
|
|
int __must_check vcpu_load(struct kvm_vcpu *vcpu);
|
|
void vcpu_put(struct kvm_vcpu *vcpu);
|
|
|
|
#ifdef __KVM_HAVE_IOAPIC
|
|
void kvm_vcpu_request_scan_ioapic(struct kvm *kvm);
|
|
#else
|
|
static inline void kvm_vcpu_request_scan_ioapic(struct kvm *kvm)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_HAVE_KVM_IRQFD
|
|
int kvm_irqfd_init(void);
|
|
void kvm_irqfd_exit(void);
|
|
#else
|
|
static inline int kvm_irqfd_init(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void kvm_irqfd_exit(void)
|
|
{
|
|
}
|
|
#endif
|
|
int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
|
|
struct module *module);
|
|
void kvm_exit(void);
|
|
|
|
void kvm_get_kvm(struct kvm *kvm);
|
|
void kvm_put_kvm(struct kvm *kvm);
|
|
|
|
static inline struct kvm_memslots *__kvm_memslots(struct kvm *kvm, int as_id)
|
|
{
|
|
return rcu_dereference_check(kvm->memslots[as_id],
|
|
srcu_read_lock_held(&kvm->srcu)
|
|
|| lockdep_is_held(&kvm->slots_lock));
|
|
}
|
|
|
|
static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm)
|
|
{
|
|
return __kvm_memslots(kvm, 0);
|
|
}
|
|
|
|
static inline struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu)
|
|
{
|
|
int as_id = kvm_arch_vcpu_memslots_id(vcpu);
|
|
|
|
return __kvm_memslots(vcpu->kvm, as_id);
|
|
}
|
|
|
|
static inline struct kvm_memory_slot *
|
|
id_to_memslot(struct kvm_memslots *slots, int id)
|
|
{
|
|
int index = slots->id_to_index[id];
|
|
struct kvm_memory_slot *slot;
|
|
|
|
slot = &slots->memslots[index];
|
|
|
|
WARN_ON(slot->id != id);
|
|
return slot;
|
|
}
|
|
|
|
/*
|
|
* KVM_SET_USER_MEMORY_REGION ioctl allows the following operations:
|
|
* - create a new memory slot
|
|
* - delete an existing memory slot
|
|
* - modify an existing memory slot
|
|
* -- move it in the guest physical memory space
|
|
* -- just change its flags
|
|
*
|
|
* Since flags can be changed by some of these operations, the following
|
|
* differentiation is the best we can do for __kvm_set_memory_region():
|
|
*/
|
|
enum kvm_mr_change {
|
|
KVM_MR_CREATE,
|
|
KVM_MR_DELETE,
|
|
KVM_MR_MOVE,
|
|
KVM_MR_FLAGS_ONLY,
|
|
};
|
|
|
|
int kvm_set_memory_region(struct kvm *kvm,
|
|
const struct kvm_userspace_memory_region *mem);
|
|
int __kvm_set_memory_region(struct kvm *kvm,
|
|
const struct kvm_userspace_memory_region *mem);
|
|
void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
|
|
struct kvm_memory_slot *dont);
|
|
int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
|
|
unsigned long npages);
|
|
void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots);
|
|
int kvm_arch_prepare_memory_region(struct kvm *kvm,
|
|
struct kvm_memory_slot *memslot,
|
|
const struct kvm_userspace_memory_region *mem,
|
|
enum kvm_mr_change change);
|
|
void kvm_arch_commit_memory_region(struct kvm *kvm,
|
|
const struct kvm_userspace_memory_region *mem,
|
|
const struct kvm_memory_slot *old,
|
|
const struct kvm_memory_slot *new,
|
|
enum kvm_mr_change change);
|
|
bool kvm_largepages_enabled(void);
|
|
void kvm_disable_largepages(void);
|
|
/* flush all memory translations */
|
|
void kvm_arch_flush_shadow_all(struct kvm *kvm);
|
|
/* flush memory translations pointing to 'slot' */
|
|
void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
|
|
struct kvm_memory_slot *slot);
|
|
|
|
int gfn_to_page_many_atomic(struct kvm_memory_slot *slot, gfn_t gfn,
|
|
struct page **pages, int nr_pages);
|
|
|
|
struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
|
|
unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
|
|
unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable);
|
|
unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn);
|
|
unsigned long gfn_to_hva_memslot_prot(struct kvm_memory_slot *slot, gfn_t gfn,
|
|
bool *writable);
|
|
void kvm_release_page_clean(struct page *page);
|
|
void kvm_release_page_dirty(struct page *page);
|
|
void kvm_set_page_accessed(struct page *page);
|
|
|
|
pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn);
|
|
pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
|
|
pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault,
|
|
bool *writable);
|
|
pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn);
|
|
pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn);
|
|
pfn_t __gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn, bool atomic,
|
|
bool *async, bool write_fault, bool *writable);
|
|
|
|
void kvm_release_pfn_clean(pfn_t pfn);
|
|
void kvm_set_pfn_dirty(pfn_t pfn);
|
|
void kvm_set_pfn_accessed(pfn_t pfn);
|
|
void kvm_get_pfn(pfn_t pfn);
|
|
|
|
int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
|
|
int len);
|
|
int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data,
|
|
unsigned long len);
|
|
int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
|
|
int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
|
|
void *data, unsigned long len);
|
|
int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
|
|
int offset, int len);
|
|
int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
|
|
unsigned long len);
|
|
int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
|
|
void *data, unsigned long len);
|
|
int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
|
|
gpa_t gpa, unsigned long len);
|
|
int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
|
|
int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
|
|
struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
|
|
int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
|
|
unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn);
|
|
void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
|
|
|
|
struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu);
|
|
struct kvm_memory_slot *kvm_vcpu_gfn_to_memslot(struct kvm_vcpu *vcpu, gfn_t gfn);
|
|
pfn_t kvm_vcpu_gfn_to_pfn_atomic(struct kvm_vcpu *vcpu, gfn_t gfn);
|
|
pfn_t kvm_vcpu_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn);
|
|
struct page *kvm_vcpu_gfn_to_page(struct kvm_vcpu *vcpu, gfn_t gfn);
|
|
unsigned long kvm_vcpu_gfn_to_hva(struct kvm_vcpu *vcpu, gfn_t gfn);
|
|
unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu *vcpu, gfn_t gfn, bool *writable);
|
|
int kvm_vcpu_read_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, void *data, int offset,
|
|
int len);
|
|
int kvm_vcpu_read_guest_atomic(struct kvm_vcpu *vcpu, gpa_t gpa, void *data,
|
|
unsigned long len);
|
|
int kvm_vcpu_read_guest(struct kvm_vcpu *vcpu, gpa_t gpa, void *data,
|
|
unsigned long len);
|
|
int kvm_vcpu_write_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, const void *data,
|
|
int offset, int len);
|
|
int kvm_vcpu_write_guest(struct kvm_vcpu *vcpu, gpa_t gpa, const void *data,
|
|
unsigned long len);
|
|
void kvm_vcpu_mark_page_dirty(struct kvm_vcpu *vcpu, gfn_t gfn);
|
|
|
|
void kvm_vcpu_block(struct kvm_vcpu *vcpu);
|
|
void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
|
|
int kvm_vcpu_yield_to(struct kvm_vcpu *target);
|
|
void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu);
|
|
void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
|
|
void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
|
|
|
|
void kvm_flush_remote_tlbs(struct kvm *kvm);
|
|
void kvm_reload_remote_mmus(struct kvm *kvm);
|
|
void kvm_make_mclock_inprogress_request(struct kvm *kvm);
|
|
void kvm_make_scan_ioapic_request(struct kvm *kvm);
|
|
bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req);
|
|
|
|
long kvm_arch_dev_ioctl(struct file *filp,
|
|
unsigned int ioctl, unsigned long arg);
|
|
long kvm_arch_vcpu_ioctl(struct file *filp,
|
|
unsigned int ioctl, unsigned long arg);
|
|
int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf);
|
|
|
|
int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext);
|
|
|
|
int kvm_get_dirty_log(struct kvm *kvm,
|
|
struct kvm_dirty_log *log, int *is_dirty);
|
|
|
|
int kvm_get_dirty_log_protect(struct kvm *kvm,
|
|
struct kvm_dirty_log *log, bool *is_dirty);
|
|
|
|
void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm *kvm,
|
|
struct kvm_memory_slot *slot,
|
|
gfn_t gfn_offset,
|
|
unsigned long mask);
|
|
|
|
int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
|
|
struct kvm_dirty_log *log);
|
|
|
|
int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level,
|
|
bool line_status);
|
|
long kvm_arch_vm_ioctl(struct file *filp,
|
|
unsigned int ioctl, unsigned long arg);
|
|
|
|
int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
|
|
int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
|
|
|
|
int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
|
|
struct kvm_translation *tr);
|
|
|
|
int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
|
|
int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
|
|
int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
|
|
struct kvm_sregs *sregs);
|
|
int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
|
|
struct kvm_sregs *sregs);
|
|
int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
|
|
struct kvm_mp_state *mp_state);
|
|
int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
|
|
struct kvm_mp_state *mp_state);
|
|
int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
|
|
struct kvm_guest_debug *dbg);
|
|
int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
|
|
|
|
int kvm_arch_init(void *opaque);
|
|
void kvm_arch_exit(void);
|
|
|
|
int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
|
|
void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
|
|
|
|
void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu);
|
|
|
|
void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
|
|
void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
|
|
void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
|
|
struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id);
|
|
int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
|
|
void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu);
|
|
void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
|
|
|
|
int kvm_arch_hardware_enable(void);
|
|
void kvm_arch_hardware_disable(void);
|
|
int kvm_arch_hardware_setup(void);
|
|
void kvm_arch_hardware_unsetup(void);
|
|
void kvm_arch_check_processor_compat(void *rtn);
|
|
int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
|
|
int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu);
|
|
|
|
void *kvm_kvzalloc(unsigned long size);
|
|
|
|
#ifndef __KVM_HAVE_ARCH_VM_ALLOC
|
|
static inline struct kvm *kvm_arch_alloc_vm(void)
|
|
{
|
|
return kzalloc(sizeof(struct kvm), GFP_KERNEL);
|
|
}
|
|
|
|
static inline void kvm_arch_free_vm(struct kvm *kvm)
|
|
{
|
|
kfree(kvm);
|
|
}
|
|
#endif
|
|
|
|
#ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA
|
|
void kvm_arch_register_noncoherent_dma(struct kvm *kvm);
|
|
void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm);
|
|
bool kvm_arch_has_noncoherent_dma(struct kvm *kvm);
|
|
#else
|
|
static inline void kvm_arch_register_noncoherent_dma(struct kvm *kvm)
|
|
{
|
|
}
|
|
|
|
static inline void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm)
|
|
{
|
|
}
|
|
|
|
static inline bool kvm_arch_has_noncoherent_dma(struct kvm *kvm)
|
|
{
|
|
return false;
|
|
}
|
|
#endif
|
|
#ifdef __KVM_HAVE_ARCH_ASSIGNED_DEVICE
|
|
void kvm_arch_start_assignment(struct kvm *kvm);
|
|
void kvm_arch_end_assignment(struct kvm *kvm);
|
|
bool kvm_arch_has_assigned_device(struct kvm *kvm);
|
|
#else
|
|
static inline void kvm_arch_start_assignment(struct kvm *kvm)
|
|
{
|
|
}
|
|
|
|
static inline void kvm_arch_end_assignment(struct kvm *kvm)
|
|
{
|
|
}
|
|
|
|
static inline bool kvm_arch_has_assigned_device(struct kvm *kvm)
|
|
{
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
static inline wait_queue_head_t *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu)
|
|
{
|
|
#ifdef __KVM_HAVE_ARCH_WQP
|
|
return vcpu->arch.wqp;
|
|
#else
|
|
return &vcpu->wq;
|
|
#endif
|
|
}
|
|
|
|
#ifdef __KVM_HAVE_ARCH_INTC_INITIALIZED
|
|
/*
|
|
* returns true if the virtual interrupt controller is initialized and
|
|
* ready to accept virtual IRQ. On some architectures the virtual interrupt
|
|
* controller is dynamically instantiated and this is not always true.
|
|
*/
|
|
bool kvm_arch_intc_initialized(struct kvm *kvm);
|
|
#else
|
|
static inline bool kvm_arch_intc_initialized(struct kvm *kvm)
|
|
{
|
|
return true;
|
|
}
|
|
#endif
|
|
|
|
int kvm_arch_init_vm(struct kvm *kvm, unsigned long type);
|
|
void kvm_arch_destroy_vm(struct kvm *kvm);
|
|
void kvm_arch_sync_events(struct kvm *kvm);
|
|
|
|
int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
|
|
void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
|
|
|
|
bool kvm_is_reserved_pfn(pfn_t pfn);
|
|
|
|
struct kvm_irq_ack_notifier {
|
|
struct hlist_node link;
|
|
unsigned gsi;
|
|
void (*irq_acked)(struct kvm_irq_ack_notifier *kian);
|
|
};
|
|
|
|
int kvm_irq_map_gsi(struct kvm *kvm,
|
|
struct kvm_kernel_irq_routing_entry *entries, int gsi);
|
|
int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin);
|
|
|
|
int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level,
|
|
bool line_status);
|
|
int kvm_set_irq_inatomic(struct kvm *kvm, int irq_source_id, u32 irq, int level);
|
|
int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm,
|
|
int irq_source_id, int level, bool line_status);
|
|
bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin);
|
|
void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
|
|
void kvm_register_irq_ack_notifier(struct kvm *kvm,
|
|
struct kvm_irq_ack_notifier *kian);
|
|
void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
|
|
struct kvm_irq_ack_notifier *kian);
|
|
int kvm_request_irq_source_id(struct kvm *kvm);
|
|
void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
|
|
|
|
#ifdef CONFIG_KVM_DEVICE_ASSIGNMENT
|
|
int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot);
|
|
void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot);
|
|
#else
|
|
static inline int kvm_iommu_map_pages(struct kvm *kvm,
|
|
struct kvm_memory_slot *slot)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void kvm_iommu_unmap_pages(struct kvm *kvm,
|
|
struct kvm_memory_slot *slot)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
/* must be called with irqs disabled */
|
|
static inline void __kvm_guest_enter(void)
|
|
{
|
|
guest_enter();
|
|
/* KVM does not hold any references to rcu protected data when it
|
|
* switches CPU into a guest mode. In fact switching to a guest mode
|
|
* is very similar to exiting to userspace from rcu point of view. In
|
|
* addition CPU may stay in a guest mode for quite a long time (up to
|
|
* one time slice). Lets treat guest mode as quiescent state, just like
|
|
* we do with user-mode execution.
|
|
*/
|
|
if (!context_tracking_cpu_is_enabled())
|
|
rcu_virt_note_context_switch(smp_processor_id());
|
|
}
|
|
|
|
/* must be called with irqs disabled */
|
|
static inline void __kvm_guest_exit(void)
|
|
{
|
|
guest_exit();
|
|
}
|
|
|
|
static inline void kvm_guest_enter(void)
|
|
{
|
|
unsigned long flags;
|
|
|
|
local_irq_save(flags);
|
|
__kvm_guest_enter();
|
|
local_irq_restore(flags);
|
|
}
|
|
|
|
static inline void kvm_guest_exit(void)
|
|
{
|
|
unsigned long flags;
|
|
|
|
local_irq_save(flags);
|
|
__kvm_guest_exit();
|
|
local_irq_restore(flags);
|
|
}
|
|
|
|
/*
|
|
* search_memslots() and __gfn_to_memslot() are here because they are
|
|
* used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c.
|
|
* gfn_to_memslot() itself isn't here as an inline because that would
|
|
* bloat other code too much.
|
|
*/
|
|
static inline struct kvm_memory_slot *
|
|
search_memslots(struct kvm_memslots *slots, gfn_t gfn)
|
|
{
|
|
int start = 0, end = slots->used_slots;
|
|
int slot = atomic_read(&slots->lru_slot);
|
|
struct kvm_memory_slot *memslots = slots->memslots;
|
|
|
|
if (gfn >= memslots[slot].base_gfn &&
|
|
gfn < memslots[slot].base_gfn + memslots[slot].npages)
|
|
return &memslots[slot];
|
|
|
|
while (start < end) {
|
|
slot = start + (end - start) / 2;
|
|
|
|
if (gfn >= memslots[slot].base_gfn)
|
|
end = slot;
|
|
else
|
|
start = slot + 1;
|
|
}
|
|
|
|
if (gfn >= memslots[start].base_gfn &&
|
|
gfn < memslots[start].base_gfn + memslots[start].npages) {
|
|
atomic_set(&slots->lru_slot, start);
|
|
return &memslots[start];
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct kvm_memory_slot *
|
|
__gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn)
|
|
{
|
|
return search_memslots(slots, gfn);
|
|
}
|
|
|
|
static inline unsigned long
|
|
__gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn)
|
|
{
|
|
return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE;
|
|
}
|
|
|
|
static inline int memslot_id(struct kvm *kvm, gfn_t gfn)
|
|
{
|
|
return gfn_to_memslot(kvm, gfn)->id;
|
|
}
|
|
|
|
static inline gfn_t
|
|
hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot)
|
|
{
|
|
gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT;
|
|
|
|
return slot->base_gfn + gfn_offset;
|
|
}
|
|
|
|
static inline gpa_t gfn_to_gpa(gfn_t gfn)
|
|
{
|
|
return (gpa_t)gfn << PAGE_SHIFT;
|
|
}
|
|
|
|
static inline gfn_t gpa_to_gfn(gpa_t gpa)
|
|
{
|
|
return (gfn_t)(gpa >> PAGE_SHIFT);
|
|
}
|
|
|
|
static inline hpa_t pfn_to_hpa(pfn_t pfn)
|
|
{
|
|
return (hpa_t)pfn << PAGE_SHIFT;
|
|
}
|
|
|
|
static inline bool kvm_is_error_gpa(struct kvm *kvm, gpa_t gpa)
|
|
{
|
|
unsigned long hva = gfn_to_hva(kvm, gpa_to_gfn(gpa));
|
|
|
|
return kvm_is_error_hva(hva);
|
|
}
|
|
|
|
static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
|
|
{
|
|
set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
|
|
}
|
|
|
|
enum kvm_stat_kind {
|
|
KVM_STAT_VM,
|
|
KVM_STAT_VCPU,
|
|
};
|
|
|
|
struct kvm_stats_debugfs_item {
|
|
const char *name;
|
|
int offset;
|
|
enum kvm_stat_kind kind;
|
|
struct dentry *dentry;
|
|
};
|
|
extern struct kvm_stats_debugfs_item debugfs_entries[];
|
|
extern struct dentry *kvm_debugfs_dir;
|
|
|
|
#if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
|
|
static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq)
|
|
{
|
|
if (unlikely(kvm->mmu_notifier_count))
|
|
return 1;
|
|
/*
|
|
* Ensure the read of mmu_notifier_count happens before the read
|
|
* of mmu_notifier_seq. This interacts with the smp_wmb() in
|
|
* mmu_notifier_invalidate_range_end to make sure that the caller
|
|
* either sees the old (non-zero) value of mmu_notifier_count or
|
|
* the new (incremented) value of mmu_notifier_seq.
|
|
* PowerPC Book3s HV KVM calls this under a per-page lock
|
|
* rather than under kvm->mmu_lock, for scalability, so
|
|
* can't rely on kvm->mmu_lock to keep things ordered.
|
|
*/
|
|
smp_rmb();
|
|
if (kvm->mmu_notifier_seq != mmu_seq)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
|
|
|
|
#ifdef CONFIG_S390
|
|
#define KVM_MAX_IRQ_ROUTES 4096 //FIXME: we can have more than that...
|
|
#else
|
|
#define KVM_MAX_IRQ_ROUTES 1024
|
|
#endif
|
|
|
|
int kvm_setup_default_irq_routing(struct kvm *kvm);
|
|
int kvm_set_irq_routing(struct kvm *kvm,
|
|
const struct kvm_irq_routing_entry *entries,
|
|
unsigned nr,
|
|
unsigned flags);
|
|
int kvm_set_routing_entry(struct kvm_kernel_irq_routing_entry *e,
|
|
const struct kvm_irq_routing_entry *ue);
|
|
void kvm_free_irq_routing(struct kvm *kvm);
|
|
|
|
#else
|
|
|
|
static inline void kvm_free_irq_routing(struct kvm *kvm) {}
|
|
|
|
#endif
|
|
|
|
int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi);
|
|
|
|
#ifdef CONFIG_HAVE_KVM_EVENTFD
|
|
|
|
void kvm_eventfd_init(struct kvm *kvm);
|
|
int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args);
|
|
|
|
#ifdef CONFIG_HAVE_KVM_IRQFD
|
|
int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args);
|
|
void kvm_irqfd_release(struct kvm *kvm);
|
|
void kvm_irq_routing_update(struct kvm *);
|
|
#else
|
|
static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline void kvm_irqfd_release(struct kvm *kvm) {}
|
|
#endif
|
|
|
|
#else
|
|
|
|
static inline void kvm_eventfd_init(struct kvm *kvm) {}
|
|
|
|
static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline void kvm_irqfd_release(struct kvm *kvm) {}
|
|
|
|
#ifdef CONFIG_HAVE_KVM_IRQCHIP
|
|
static inline void kvm_irq_routing_update(struct kvm *kvm)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
#endif /* CONFIG_HAVE_KVM_EVENTFD */
|
|
|
|
#ifdef CONFIG_KVM_APIC_ARCHITECTURE
|
|
bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu);
|
|
#else
|
|
static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; }
|
|
#endif
|
|
|
|
static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu)
|
|
{
|
|
set_bit(req, &vcpu->requests);
|
|
}
|
|
|
|
static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu)
|
|
{
|
|
if (test_bit(req, &vcpu->requests)) {
|
|
clear_bit(req, &vcpu->requests);
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
extern bool kvm_rebooting;
|
|
|
|
struct kvm_device {
|
|
struct kvm_device_ops *ops;
|
|
struct kvm *kvm;
|
|
void *private;
|
|
struct list_head vm_node;
|
|
};
|
|
|
|
/* create, destroy, and name are mandatory */
|
|
struct kvm_device_ops {
|
|
const char *name;
|
|
int (*create)(struct kvm_device *dev, u32 type);
|
|
|
|
/*
|
|
* Destroy is responsible for freeing dev.
|
|
*
|
|
* Destroy may be called before or after destructors are called
|
|
* on emulated I/O regions, depending on whether a reference is
|
|
* held by a vcpu or other kvm component that gets destroyed
|
|
* after the emulated I/O.
|
|
*/
|
|
void (*destroy)(struct kvm_device *dev);
|
|
|
|
int (*set_attr)(struct kvm_device *dev, struct kvm_device_attr *attr);
|
|
int (*get_attr)(struct kvm_device *dev, struct kvm_device_attr *attr);
|
|
int (*has_attr)(struct kvm_device *dev, struct kvm_device_attr *attr);
|
|
long (*ioctl)(struct kvm_device *dev, unsigned int ioctl,
|
|
unsigned long arg);
|
|
};
|
|
|
|
void kvm_device_get(struct kvm_device *dev);
|
|
void kvm_device_put(struct kvm_device *dev);
|
|
struct kvm_device *kvm_device_from_filp(struct file *filp);
|
|
int kvm_register_device_ops(struct kvm_device_ops *ops, u32 type);
|
|
void kvm_unregister_device_ops(u32 type);
|
|
|
|
extern struct kvm_device_ops kvm_mpic_ops;
|
|
extern struct kvm_device_ops kvm_xics_ops;
|
|
extern struct kvm_device_ops kvm_arm_vgic_v2_ops;
|
|
extern struct kvm_device_ops kvm_arm_vgic_v3_ops;
|
|
|
|
#ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT
|
|
|
|
static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val)
|
|
{
|
|
vcpu->spin_loop.in_spin_loop = val;
|
|
}
|
|
static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val)
|
|
{
|
|
vcpu->spin_loop.dy_eligible = val;
|
|
}
|
|
|
|
#else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */
|
|
|
|
static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val)
|
|
{
|
|
}
|
|
|
|
static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val)
|
|
{
|
|
}
|
|
#endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */
|
|
#endif
|
|
|